Looking for information on MachineId format

[LelouBil]

Hello, I am trying to reproduce the MachineId generation of the steam client.

I have successfully reproduced the first field and from the last field using code from here :

SteamKit/SteamKit2/SteamKit2/Util/HardwareUtils.cs

Line 45 in 8e7ec94

sealed class DefaultMachineInfoProvider : IMachineInfoProvider

However, I have not been able to reproduce the second field, based on the Mac address of the interface.
I even tried every interface on my system, but I am not able to get the same hash value as the one steam is sending for the second field.

To test it, I intercepted the login request using NetHook2 and NetHookAnalyzer2, and used a hex editor to look at the hashes.

[zxcvqwerasdf]

I think it's because steam machine id generation != steamkit machine id generation. You need reverse engineer machineid gathering from steam, no other ways.